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java.lang.annotation.ElementType.TYPE }</em>) ：该注解可以用于  类、接口，方法   上</li></ol> <div class="language-java line-numbers-mode"><pre class="language-java"><code><span class="token keyword">package</span> <span class="token namespace">com<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>bsp<span class="token punctuation">.</span>util</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token namespace">java<span class="token punctuation">.</span>lang<span class="token punctuation">.</span>annotation<span class="token punctuation">.</span></span><span class="token class-name">Retention</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token namespace">java<span class="token punctuation">.</span>lang<span class="token punctuation">.</span>annotation<span class="token punctuation">.</span></span><span class="token class-name">RetentionPolicy</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token namespace">java<span class="token punctuation">.</span>lang<span class="token punctuation">.</span>annotation<span class="token punctuation">.</span></span><span class="token class-name">Target</span><span class="token punctuation">;</span>

<span class="token annotation punctuation">@Retention</span><span class="token punctuation">(</span><span class="token class-name">RetentionPolicy</span><span class="token punctuation">.</span>RUNTIME<span class="token punctuation">)</span>
<span class="token annotation punctuation">@Target</span><span class="token punctuation">(</span> <span class="token punctuation">{</span> <span class="token class-name"><span class="token namespace">java<span class="token punctuation">.</span>lang<span class="token punctuation">.</span>annotation<span class="token punctuation">.</span></span>ElementType</span><span class="token punctuation">.</span>METHOD<span class="token punctuation">,</span>  
        <span class="token class-name"><span class="token namespace">java<span class="token punctuation">.</span>lang<span class="token punctuation">.</span>annotation<span class="token punctuation">.</span></span>ElementType</span><span class="token punctuation">.</span>TYPE <span class="token punctuation">}</span><span class="token punctuation">)</span>  
<span class="token keyword">public</span> <span class="token annotation punctuation">@interface</span> <span class="token class-name">AuditLogger</span> <span class="token punctuation">{</span>  
    
    <span class="token comment">//日志记录</span>
    <span class="token keyword">public</span> <span class="token keyword">abstract</span> <span class="token class-name">String</span> <span class="token function">log</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>  
    <span class="token comment">//作用于类和方法上，如果方法注解中该属性不为空,则该方法的类型会覆盖类定义的类型</span>
    <span class="token keyword">public</span> <span class="token class-name">CodeEnum</span> <span class="token function">typeCode</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token keyword">default</span> <span class="token class-name">CodeEnum</span><span class="token punctuation">.</span>NULL<span class="token punctuation">;</span>
    <span class="token comment">//作用于方法上，用于标记增加、删除、修改操作，这些操作必须被记录，不能被关闭</span>
    <span class="token keyword">public</span> <span class="token keyword">boolean</span> <span class="token function">forceRecord</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token keyword">default</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
    
    <span class="token keyword">public</span> <span class="token keyword">enum</span> <span class="token class-name">CodeEnum</span> <span class="token punctuation">{</span>
    	
    	<span class="token function">SYSTEM</span><span class="token punctuation">(</span><span class="token string">&quot;0&quot;</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token comment">//系统日志</span>
    	<span class="token function">NULL</span><span class="token punctuation">(</span><span class="token string">&quot;&quot;</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
    	<span class="token function">MANAGEMENT</span><span class="token punctuation">(</span><span class="token string">&quot;1&quot;</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token comment">//管理模块</span>
    	<span class="token function">OTHER</span><span class="token punctuation">(</span><span class="token string">&quot;2&quot;</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token comment">//其它模块等</span>
    	<span class="token keyword">private</span> <span class="token class-name">String</span> code<span class="token punctuation">;</span>
    	
    	<span class="token keyword">private</span> <span class="token class-name">CodeEnum</span><span class="token punctuation">(</span><span class="token class-name">String</span> code<span class="token punctuation">)</span><span class="token punctuation">{</span>
    		<span class="token keyword">this</span><span class="token punctuation">.</span>code <span class="token operator">=</span> code<span class="token punctuation">;</span>
    	<span class="token punctuation">}</span>
    	<span class="token keyword">public</span> <span class="token class-name">String</span> <span class="token function">getCode</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    		<span class="token keyword">return</span> code<span class="token punctuation">;</span>
    	<span class="token punctuation">}</span>
    	
    	<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">setCode</span><span class="token punctuation">(</span><span class="token class-name">String</span> code<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    		<span class="token keyword">this</span><span class="token punctuation">.</span>code <span class="token operator">=</span> code<span class="token punctuation">;</span>
    	<span class="token punctuation">}</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span> 
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br><span class="line-number">30</span><br><span class="line-number">31</span><br><span class="line-number">32</span><br><span class="line-number">33</span><br><span class="line-number">34</span><br><span class="line-number">35</span><br><span class="line-number">36</span><br><span class="line-number">37</span><br></div></div><h2 id="_2-aop切入"><a href="#_2-aop切入" class="header-anchor">#</a> 2. AOP切入</h2> <ul><li>com.xxx.xx.util.WebLogAspect</li></ul> <h3 id="相关注解-2"><a href="#相关注解-2" class="header-anchor">#</a> 相关注解</h3> <ol><li><p><em><strong>@Aspect</strong></em>：作用是把当前类标识为一个切面类供spring容器读取</p></li> <li><p><em><strong>@Pointcut</strong></em>：Pointcut是植入Advice的触发条件。每个Pointcut的定义包括2部分，一是表达式，二是方法签名。</p></li></ol> <p>方法签名必须是 public及void型。可以将Pointcut中的方法看作是一个被Advice引用的助记符，因为表达式不直观，因此我们可以通过方法签名的方式为 此表达式命名。因此Pointcut中的方法只需要方法签名，而不需要在方法体内编写实际代码。</p> <ol start="3"><li><p><em><strong>@Around</strong></em>：环绕增强，相当于MethodInterceptor</p></li> <li><p><em><strong>@AfterReturning</strong></em>：后置增强，相当于AfterReturningAdvice，方法正常退出时执行</p></li> <li><p><em><strong>@Before</strong></em>：标识一个前置增强方法，相当于BeforeAdvice的功能，相似功能的还有</p></li> <li><p><em><strong>@AfterThrowing</strong></em>：异常抛出增强，相当于ThrowsAdvice</p></li> <li><p><em><strong>@After</strong></em>: final增强，不管是抛出异常或者正常退出都会执行</p></li></ol> <div class="language-java line-numbers-mode"><pre class="language-java"><code><span class="token annotation punctuation">@Aspect</span>
<span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">WebLogAspect</span> <span class="token punctuation">{</span>

    <span class="token annotation punctuation">@Pointcut</span><span class="token punctuation">(</span><span class="token string">&quot;@annotation(com.xxx.xx.util.AuditLogger)&quot;</span><span class="token punctuation">)</span>
    <span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">webLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span><span class="token punctuation">}</span>

    <span class="token annotation punctuation">@Before</span><span class="token punctuation">(</span><span class="token string">&quot;webLog()&quot;</span><span class="token punctuation">)</span>
    <span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">doBefore</span><span class="token punctuation">(</span><span class="token class-name">JoinPoint</span> joinPoint<span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">Throwable</span> <span class="token punctuation">{</span>
    <span class="token punctuation">}</span>
    
    <span class="token annotation punctuation">@After</span><span class="token punctuation">(</span><span class="token string">&quot;webLog()&quot;</span><span class="token punctuation">)</span>
    <span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">doAfter</span><span class="token punctuation">(</span><span class="token class-name">JoinPoint</span> joinPoint<span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">Throwable</span> <span class="token punctuation">{</span>
    <span class="token punctuation">}</span>

    <span class="token annotation punctuation">@AfterReturning</span><span class="token punctuation">(</span>returning <span class="token operator">=</span> <span class="token string">&quot;ret&quot;</span><span class="token punctuation">,</span> pointcut <span class="token operator">=</span> <span class="token string">&quot;webLog()&quot;</span><span class="token punctuation">)</span>
    <span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">doAfterReturning</span><span class="token punctuation">(</span><span class="token class-name">JoinPoint</span> joinPoint<span class="token punctuation">,</span><span class="token class-name">Object</span> ret<span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">Throwable</span> <span class="token punctuation">{</span>
		<span class="token function">handleLogInfo</span><span class="token punctuation">(</span>joinPoint<span class="token punctuation">,</span><span class="token keyword">null</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
    
    <span class="token annotation punctuation">@AfterThrowing</span><span class="token punctuation">(</span>pointcut <span class="token operator">=</span> <span class="token string">&quot;webLog()&quot;</span><span class="token punctuation">,</span> throwing<span class="token operator">=</span> <span class="token string">&quot;error&quot;</span><span class="token punctuation">)</span>
    <span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">afterThrowingAdvice</span><span class="token punctuation">(</span><span class="token class-name">JoinPoint</span> joinPoint<span class="token punctuation">,</span> <span class="token class-name">Throwable</span> error<span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">Exception</span><span class="token punctuation">{</span>
		<span class="token function">handleLogInfo</span><span class="token punctuation">(</span>joinPoint<span class="token punctuation">,</span>error<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br></div></div><h3 id="joinpoint解析"><a href="#joinpoint解析" class="header-anchor">#</a> JoinPoint解析</h3> <ul><li>获取代理类和被代理类对象</li></ul> <table><thead><tr><th>方法名</th> <th>功能</th></tr></thead> <tbody><tr><td>Signature getSignature();</td> <td>获取封装了署名信息的对象,在该对象中可以获取到目标方法名,所属类的Class等信息</td></tr> <tr><td>Object[] getArgs();</td> <td>获取传入目标方法的参数对象</td></tr> <tr><td>Object getTarget();</td> <td>获取被代理的对象</td></tr> <tr><td>Object getThis();</td> <td>获取代理对象</td></tr></tbody></table> <ul><li>常用方法</li></ul> <div class="language-java line-numbers-mode"><pre class="language-java"><code><span class="token comment">//1.获取被代理类上注解</span>
joinPoint<span class="token punctuation">.</span><span class="token function">getTarget</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getClass</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getAnnotation</span><span class="token punctuation">(</span>注解类<span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">//2.获取包名、类名</span>
joinPoint<span class="token punctuation">.</span><span class="token function">getTarget</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getClass</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getPackage</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
joinPoint<span class="token punctuation">.</span><span class="token function">getTarget</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getClass</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getSimpleName</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">//3.获取被代理类方法上的注解</span>
<span class="token class-name">MethodSignature</span> signature <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token class-name">MethodSignature</span><span class="token punctuation">)</span> joinPoint<span class="token punctuation">.</span><span class="token function">getSignature</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
注解 methodAnnotion <span class="token operator">=</span> signature<span class="token punctuation">.</span><span class="token function">getMethod</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getAnnotation</span><span class="token punctuation">(</span>注解类<span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">//4.获取方法名</span>
signature<span class="token punctuation">.</span><span class="token function">getMethod</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getName</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">//5.获取第一个方法参数</span>
<span class="token class-name">HashMap</span> mapParam <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token class-name">HashMap</span><span class="token punctuation">)</span> joinPoint<span class="token punctuation">.</span><span class="token function">getArgs</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br></div></div><h3 id="核心方法handleloginfo"><a href="#核心方法handleloginfo" class="header-anchor">#</a> 核心方法handleLogInfo()</h3> <ul><li>处理逻辑</li></ul> <ol><li><p>获取typeCode属性（会根据它配置相应模块的日志记录开关）：<br>判断切入的类和方法的某一注解上有没有对typeCode属性进行赋值，若都没有则默认不进行日志记录，直接return结束</p></li> <li><p>获取方法注解中forceRecord属性值（相当于判断是否必须记录）：<br>判断是否为需要强制记录的方法（增删改）<br>如果不是强制记录的方法，则根据日志类型（typeCode）查询判断记录开关是否为必须记录，是则记录</p></li> <li><p>书写逻辑，获取request和JoinPoint拼装参数进行日志记录</p></li> <li><p>对记录信息入库</p></li> <li><p>根据逻辑判断是否需要发送告警邮件</p></li></ol></div> <footer class="page-edit" style="display:none;"><div class="edit-link"><a href="https://github.com/f1ybird/edit/master/docs/views/java/annotationLog.md" target="_blank" rel="noopener noreferrer">在 GitHub 上编辑此页！</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">Last Updated: </span> <span class="time">2020-06-21 23:07:31</span></div></footer> <!----> <!----></main> <!----> <div class="comments-wrapper" style="display:none;" data-v-0b87bb44><div class="valine-wrapper"><div id="valine"></div></div></div></div></div></div></div></div><div class="global-ui"><div class="back-to-ceiling" style="right:1rem;bottom:6rem;width:2.5rem;height:2.5rem;border-radius:.25rem;line-height:2.5rem;display:none;" data-v-44bd5a18 data-v-44bd5a18><svg t="1574745035067" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="5404" class="icon" data-v-44bd5a18><path d="M526.60727968 10.90185116a27.675 27.675 0 0 0-29.21455937 0c-131.36607665 82.28402758-218.69155461 228.01873535-218.69155402 394.07834331a462.20625001 462.20625001 0 0 0 5.36959153 69.94390903c1.00431239 6.55289093-0.34802892 13.13561351-3.76865779 18.80351572-32.63518765 54.11355614-51.75690182 118.55860487-51.7569018 187.94566865a371.06718723 371.06718723 0 0 0 11.50484808 91.98906777c6.53300375 25.50556257 41.68394495 28.14064038 52.69160883 4.22606766 17.37162448-37.73630017 42.14135425-72.50938081 72.80769204-103.21549295 2.18761121 3.04276886 4.15646224 6.24463696 6.40373557 9.22774369a1871.4375 1871.4375 0 0 0 140.04691725 5.34970492 1866.36093723 1866.36093723 0 0 0 140.04691723-5.34970492c2.24727335-2.98310674 4.21612437-6.18497483 6.3937923-9.2178004 30.66633723 30.70611158 55.4360664 65.4791928 72.80769147 103.21549355 11.00766384 23.91457269 46.15860503 21.27949489 52.69160879-4.22606768a371.15156223 371.15156223 0 0 0 11.514792-91.99901164c0-69.36717486-19.13165746-133.82216804-51.75690182-187.92578088-3.42062944-5.66790279-4.76302748-12.26056868-3.76865837-18.80351632a462.20625001 462.20625001 0 0 0 5.36959269-69.943909c-0.00994388-166.08943902-87.32547796-311.81420293-218.6915546-394.09823051zM605.93803103 357.87693858a93.93749974 93.93749974 0 1 1-187.89594924 6.1e-7 93.93749974 93.93749974 0 0 1 187.89594924-6.1e-7z" p-id="5405" data-v-44bd5a18></path><path d="M429.50777625 765.63860547C429.50777625 803.39355007 466.44236686 1000.39046097 512.00932183 1000.39046097c45.56695499 0 82.4922232-197.00623328 82.5015456-234.7518555 0-37.75494459-36.9345906-68.35043303-82.4922232-68.34111062-45.57627738-0.00932239-82.52019037 30.59548842-82.51086798 68.34111062z" p-id="5406" data-v-44bd5a18></path></svg></div><!----><div data-v-48108b4c><div class="DetailsOpenFlag" style="right:1rem;bottom:9rem;width:2.5rem;height:2.5rem;border-radius:.25rem;line-height:2.5rem;font-size:14px;font-weight:500;display:none;" data-v-48108b4c>
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